问题
单项选择题
QJ23型直流单臂电桥面板上的按钮“G”为（）的开关。
A.检流计支路
B.电源支路
C.比例臂
D.比较臂
答案
参考答案：A
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QJ23型直流单臂电桥面板上的按钮“G”为（）的开关。
A.检流计支路
B.电源支路
C.比例臂
D.比较臂
参考答案：A
| 读一读，选词填空。 | |
Kim: No. It is not 2__________ marker. Mary: Is this Jenny's marker? Kim: No. It is not 3__________ marker. Mary: Tom has a marker. Is this 4__________ marker? Kim: No. It is not his marker. Mary: Whose marker is it? It is 5__________ marker. |